Thermodynamic Calculation of Microalloyed Precipitation in Austenite Region for Fe-C-N-Al-Ti-V Steel

Chang Lizhong; Yang Haisen; Li Zhengbang

Volume 31 Issue 2

Apr. 2010

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Chang Lizhong, Yang Haisen, Li Zhengbang. Thermodynamic Calculation of Microalloyed Precipitation in Austenite Region for Fe-C-N-Al-Ti-V Steel[J]. IRON STEEL VANADIUM TITANIUM, 2010, 31(2): 42-48.

Citation:

Chang Lizhong, Yang Haisen, Li Zhengbang. Thermodynamic Calculation of Microalloyed Precipitation in Austenite Region for Fe-C-N-Al-Ti-V Steel[J]. IRON STEEL VANADIUM TITANIUM, 2010, 31(2): 42-48.

Chang Lizhong, Yang Haisen, Li Zhengbang. Thermodynamic Calculation of Microalloyed Precipitation in Austenite Region for Fe-C-N-Al-Ti-V Steel[J]. IRON STEEL VANADIUM TITANIUM, 2010, 31(2): 42-48.

Citation:

Chang Lizhong, Yang Haisen, Li Zhengbang. Thermodynamic Calculation of Microalloyed Precipitation in Austenite Region for Fe-C-N-Al-Ti-V Steel[J]. IRON STEEL VANADIUM TITANIUM, 2010, 31(2): 42-48.

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Thermodynamic Calculation of Microalloyed Precipitation in Austenite Region for Fe-C-N-Al-Ti-V Steel

Department of Metallurgical Technology, Central Iron & Steel Research Institute, Beijing 100081, China

Received Date: 2009-11-23
Available Online: 2023-12-05

Abstract

Abstract

A thermodynamic model of the microalloyed elements precipitation in austenite region for Fe-C-N-Al-Ti-V steel has been established.The computing results show that vanadium can precipitate from the austenite as long as the amount of nitrogen and vanadium can be increased although the solubility of V (CN) is high.When the nitrogen content in the steel is higher, effect of carbon on vanadium precipitation is slight.Even though increasing the amount of vanadium, nitrogen and carbon, V (CN) precipitates at the lower temperature of austenitic mainly too.Because of the great solubility of V (CN) in the austenite which is different from the Nb (CN), the lower reheating temperature can be adopted before rolling and so the smaller initial grains can be gained.
- microalloyed steel,
- austenite,
- thermodynamic model,
- V (CN),
- precipitation

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